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USB2.0 devices run at 480Mbits/s (240MHz) in High Speed mode which is 6 to 7% higher than 225MHZ. What was the problem in acheiving 225MHz?
[Posted by: Maqbool Ahamd | Date: 08/06/03 10:35:49 AM]
Silicon Image announced it had broken the bandwidth barrier with a new Digital Visual Interface (DVI) transmitter and receiver capable of operating at up to 225MHz in a single-link configuration. Thanks to this achievement, Silicon Image will be able to provide low-cost solution for transmitting data needed to support up to 2048x1536 resolutions on displays via DVI.
The latest additions to Silicon Image’s comprehensive SiI 1000family of DVI solutions, the PanelLink SiI 1171 receiver and SiI 1172 transmitter are fully compliant with DVI throughout its defined single-link bandwidth range of 25-165MHz.
The SiI 1171 receiver and SiI 1172 transmitter support the new breed of high-resolution QXGA (2048x1536) displays in a low-cost, single-link digital interface. Going a step further, the SiI 1171 receiver simplifies monitor and projector printed circuit board (PCB) layout, which can significantly reduce the cost of a QXGA display's PCB bill of materials by 25 to 85%, according to Silicon Image. Specifically, the company believes it can reduce the PCB bill of materials from approximately 20-35% of total monitor cost to only 5%.
The SiI 1171 receiver and SiI 1172 transmitter also support UXGA displays at a 75Hz refresh rate, QXGA displays at 60Hz and WQXGA displays at 50Hz, resolutions that were until now not supported by a single-link architecture. Furthermore, support for a QXGA single link should make digital CRTs with a digital interface a more attractive option for OEMs.
Silicon Image will continue to provide dual-link solutions such as the SiI 163B receiver and SiI 178 transmitter for applications requiring speeds greater than 225MHz. By boosting the single-link bandwidth to 225MHz, the SiI 1171 receiver and SiI 1172 transmitter extend the maximum dual-link speed to 450MHz for future, higher-resolution displays.
The SiI 1171 receiver is packaged as a 100-pin TQFP and priced at $9.65 in 10 000 quantities. Samples are scheduled to be available in the third quarter, with volume production slated for the Q4. Priced at $5.85 in 10 000 quantities, the SiI 1172 transmitter is packaged as a 48-pin TSSOP. Samples are scheduled for availability next quarter, with volume production slated for the Q4.
